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2 years ago

14

Dan is a Civil Engineer for a company that builds nuclear power plants throughout the world. Which best describes the places he

works and what he does there?

Computers and Technology

2 answers:

Yanka [14]2 years ago

4 0

IN a laboratory... C

Arada [10]2 years ago

4 0

Answer:

IN a laboratory... C

Explanation:

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Driving is expensive. Write a program with a car's miles/gallon and gas dollars/gallon (both doubles) as input, and output the g

I am Lyosha [343]

Answer:

#program in Python.

#function to calculate driving cost

def driving_cost(d_miles, m_per_gallon, doll_per_gallon):

#calculate cost and return the value

return (d_miles / m_per_gallon) * doll_per_gallon

#read the miles per gallon

m_per_gallon = float(input("Enter car's miles/gallon:"))

#read dollars per gallon

doll_per_gallon = float(input("Enter gas dollars/gallon:"))

#call function to find cost for 10 miles

print('%0.2f' % driving_cost(10, m_per_gallon, doll_per_gallon))

#call function to find cost for 50 miles

print('%0.2f' % driving_cost(50, m_per_gallon, doll_per_gallon))

#call function to find cost for 400 miles

print('%0.2f' % driving_cost(400, m_per_gallon, doll_per_gallon))

Explanation:

Read the value of miles per gallon and assign it to variable "m_per_gallon". Then read dollars per gallon from user and assign it to variable "doll_per_gallon". Call the function driving_cost() with parameter miles, m_per_gallon and doll_per_gallon. This function will find the cost of driving and return the cost.Call function for 10, 50 and 400 miles.

Output:

Enter car's miles/gallon:20

Enter gas dollars/gallon:3.1599

1.58

7.90

63.20

5 0

2 years ago

Read 2 more answers

I am doing keyboarding keyboarding is very boring and yeah

Bingel [31]

Answer:

yes I agree with you

Explanation:

I have been keyboarding for the past 7 hours.

7 0

2 years ago

Read 2 more answers

Write a program that creates a dictionary containing the U.S. states as keys and their capitals as values. (Use the Internet to

Dima020 [189]

Answer:

import random
states = {
"Alabama": "Montgomery",
"California": "Sacramento",
"Florida": "Tallahassee",
"Hawaii": "Honolulu",
"Indiana": "Indianapolis",
"Michigan": "Lansing",
"New York": "Albany",
"Texas" : "Austin",
"Utah" : "Salt Lake City",
"Wisconsin": "Madison"
}
correct = 0
wrong = 0
round = 1
while(round <= 5):
current_state = random.choice(list(states))
answer = input("What is the capital of " + current_state + ": ")
if(answer == states[current_state]):
correct += 1
else:
wrong += 1
round += 1
print("Correct answer: " + str(correct))
print("Wrong answer: " + str(wrong))

Explanation:

The solution code is written in Python 3.

Line 3 -14

Create a dictionary of US States with capital as each of their corresponding value. Please note only ten sample states are chosen here.

Line 16 - 18

Create variables to track the number of correct and inaccurate response and also round counter.

Line 19 - 28

Set the while condition to enable user to play the quiz for five questions and use random.choice to randomly pick a state from the dictionary and prompt user to input the capital of selected stated.

If the answer matched with the capital value of the selected state, increment the correct counter by one. Otherwise the wrong counter will be incremented by one. Increment the round counter by one before proceed to next round.

Line 30 - 31

Print the number of correct responses and wrong responses.

7 0

2 years ago

A 1.17 g sample of an alkane hydrocarbon gas occupies a volume of 674 mL at 28°C and 741 mmHg. Alkanes are known to have the gen

Nina [5.8K]

Answer:

C3H8

Explanation:

Step 1:

Data obtained from the question. This includes the following:

Mass of alkane = 1.17g

Volume (V) = 674 mL

Temperature (T) = 28°C

Pressure (P) = 741 mmHg.

Gas constant (R) = 0.08206 atm.L/Kmol

Step 2:

Conversion to appropriate unit.

For Volume:

1000mL = 1L

Therefore, 674mL = 674/1000 = 0.674L

For Temperature:

Temperature (Kelvin) = Temperature (celsius) + 273

Temperature (celsius) = 28°C

Temperature (Kelvin) = 28°C + 273 = 301K

For Pressure:

760mmHg = 1atm

Therefore, 741 mmHg = 741/760 = 0.975atm

Step 3:

Determination of the number of mole of the alkane..

The number of mole of the alkane can be obtained by using the ideal gas equation. This is illustrated below:

Volume (V) = 0.674L

Temperature (T) = 301K

Pressure (P) = 0.975atm

Gas constant (R) = 0.08206 atm.L/Kmol

Number of mole (n) =?

PV = nRT

n = PV /RT

n = (0.975 x 0.674)/(0.08206x301)

n = 0.0266 mole

Step 4:

Determination of the molar mass of the alkane.

Mass of alkane = 1.17g

Number of mole of the alkane = 0.0266mole

Molar Mass of the alkane =?

Number of mole = Mass/Molar Mass

Molar Mass = Mass/number of mole

Molar Mass of the alkane = 1.17/0.0266 = 44g/mol

Step 5:

Determination of the molecular formula of the alkane.

This is illustrated below:

The general formula for the alkane is CnH2n+2

To obtain the molecular formula for the alkane we shall assume n = 1, 2, 3 or more till we arrive at molar Mass of 44.

When n = 1

CnH2n+2 = CH4 = 12 + (4x1) = 16g/mol

When n = 2

CnH2n+2 = C2H6 = (12x2) + (6x1) = 30g/mol

When n = 3

CnH2n+2 = C3H8 = (12x3) + (8x1) = 44g/mol

We can see that when n is 3, the molar mass is 44g/mol.

Therefore, the molecular formula for the alkane is C3H8.

7 0

2 years ago

How can we make our programs behave differently each time they are run?

tensa zangetsu [6.8K]

Answer:

By given the right speech as much as the answers must be

Explanation:

By given the right speech as much as the answers must be

7 0

1 year ago